VIVOSUN 4 inch Inline Duct Booster Fan 100 CFM, Low Noise & Extra Long 5.5' Grounded Power Cord HOUSEHOLD APPLICATIONS: Help to boost airflow in HVAC units to remove exhausts and odors from bathrooms & workshops and ventilate basements & attics, etc. UPGRADED ADVANTAGES: Superior balanced blades for long service life & quiet operation; Motor features a permanently lubricated bearing that operates quietly and requires no maintenance; Portable and lightweight; Sufficient 5.5' grounded power cord SPECS.: Diameter 4 inch, Speed 2930 RPM, Air Flow 100 CFM, Voltage 110/120V, Power 12W GROW ROOM APPLICATIONS: Used as intake fan to bring fresh air into grow rooms; Also used as exhaust fan in smaller setups with LEDs or Lights under 400W. NOTE: Max Operating Temp of Motor is 130 / 266; Max Ambient Temp is 60 / 140. If any other materials/particles get into the duct fan and get the blade stuck, users are to turn off the power immediately, clean it up, turn the power back on when handled properly. Diameter: 4 inch Power Supply: 110/120V Power: 12 W Speed: 2930 RPM Air Flow: 100 CFM Cord Length: 5.5 feet This duct fan can not used with carbon filter.